package com.lzq.springbook.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import static com.lzq.springbook.constant.Constant.SESSION_USER_KEY;

@Slf4j
@Component
public class LoginInterceptor implements HandlerInterceptor {
    //true表示放行,false表示拦截
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession(false);
        if(session!=null && session.getAttribute(SESSION_USER_KEY)!=null) {
            return true;
        }
        response.setStatus(401);
        return false;
    }
}
